Police arrested two additional suspects on Monday after a break-in and multiple shooting in Cole Harbour, N.S., bringing the total number of arrests to four.

The arrests come after three teens were rushed to hospital Sunday night following the shooting on Arklow Drive in Cole Harbour, a suburb of Halifax. Police say four men with bandanas over their faces burst into the residence and opened fire.

RCMP and paramedics were called to the scene at about 7 p.m. Sunday and blocked off a number of roads in the area shortly after arriving.

A 17-year-old woman, 17-year-old man and an 18-year-old man were rushed to hospital. Police said two of them were in serious condition.

Two men between the ages of 17 and 18 were arrested on Sunday at about 8 p.m. on Caldwell Road, a short drive from the scene of the break-in. Officers surrounded their location and they surrendered to police.

Police arrested two more 17-year-old males on Monday afternoon around 12:30. The teens were arrested without incident and their vehicle was also seized during the operation, police said.

Investigators said they had been searching for the vehicle since Sunday.

Residents in the area of the shooting said there was a heavy police presence on the roads through much of the night.

Cole Harbour resident Damien Long said he initially “thought nothing of it” to see police at the Arklow Drive address where the break-in happened. “There has been some issues at the house before,” Long told CTV Atlantic.

But Long said he was “scared to death” when he saw the number of police in the area as the night went on. He said he saw K-9 units and officers holding semi-automatic weapons at the scene.

Police did not say which hospital the shooting victims were taken to, but the Queen Elizabeth II Hospital in Halifax went into lockdown about 30 minutes after police arrived at the scene of the Cole Harbour shooting.

The suspects and the victims were known to each other, police said.

“This was not a random act,” Nova Scotia RCMP said in a statement on Monday.

The RCMP investigation is ongoing.